Video capture implementation using the Media Foundation API.

media/video/capture/win/capability_list_win.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Windows specific implementation of VideoCaptureDevice.
+// DirectShow is used for capturing. DirectShow provide its own threads
+// for capturing.
+
+#ifndef MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_
+#define MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_
+
+#include <list>
+
+#include "base/threading/non_thread_safe.h"
+#include "media/video/capture/video_capture_types.h"
+
+namespace media {
+
+struct VideoCaptureCapabilityWin : public VideoCaptureCapability {
+  explicit VideoCaptureCapabilityWin(int index) : stream_index(index) {}
+  int stream_index;
+};
+
+class CapabilityList : public base::NonThreadSafe {
+ public:
+  CapabilityList();
+  ~CapabilityList();
+
+  bool empty() const { return capabilities_.empty(); }
+
+  // Appends an entry to the list.
+  void Add(const VideoCaptureCapabilityWin& capability);
+
+  // Loops through the list of capabilities and returns an index of the best
+  // matching capability.  The algorithm prioritizes height, width, frame rate
+  // and color format in that order.
+  const VideoCaptureCapabilityWin& GetBestMatchedCapability(
+      int requested_width, int requested_height,
+      int requested_frame_rate) const;
+
+ private:
+  typedef std::list<VideoCaptureCapabilityWin> Capabilities;
+  Capabilities capabilities_;
+
+  DISALLOW_COPY_AND_ASSIGN(CapabilityList);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_